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Subsequent Events - Additional information (Detail) (USD $)
 6 Months Ended 1 Months Ended 1 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Dec. 31, 2012
Jun. 30, 2013
Stock Purchase Agreement [Member]
Jun. 26, 2013
Dividend Paid [Member]
Jul. 12, 2013
Subsequent Event [Member]
Jun. 30, 2013
Subsequent Event [Member]
RSU [Member]
Minimum [Member]
Jul. 12, 2013
Subsequent Event [Member]
Credit Suisse AG [Member]
First Lien Credit Facility Term Loan [Member]
Jul. 12, 2013
Subsequent Event [Member]
Credit Suisse AG [Member]
Second Lien Credit Facility Term Loan [Member]
Jul. 12, 2013
Subsequent Event [Member]
Passage of Time [Member]
Jul. 12, 2013
Subsequent Event [Member]
Achievement of Certain Goals [Member]
Jul. 15, 2013
Subsequent Event [Member]
Dividend Paid [Member]
Subsequent Event [Line Items]                        
Preferred Stock, Dividend Rate, Per-Dollar-Amount         $ 10              
Payments of Ordinary Dividends, Preferred Stock and Preference Stock $ 1,486,000 $ 1,500,000                   $ 700,000
Stock Purchase Agreement Initiation Date Jul. 12, 2013                      
Consideration payable under the Stock Purchase Agreement       365,000,000                
Restricted shares amount payable under agreement 8,000,000                      
Termination fee payable 18,000,000                      
Commitment conditions The commitment is subject to various conditions, including (i) the absence of a material adverse effect having occurred with respect to 3PD and its subsidiaries, (ii) the execution of satisfactory definitive documentation and (iii) other customary closing conditions. Any permanent debt or equity financing obtained by the Company on or prior to the closing of the 3PD Transaction will reduce the amount of the commitment.                      
Credit agreement under Commitment Letter           50.00%            
Maximum credit borrowing capacity               $ 140,000,000 $ 55,000,000      
Potential number of Restricted Stock Units awarded           600,000       100,000 500,000  
RSU vesting price per share. $ 0.001   $ 0.001       $ 32.50